http://git-wip-us.apache.org/repos/asf/hbase-site/blob/abb69192/devapidocs/src-html/org/apache/hadoop/hbase/ipc/BlockingRpcConnection.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/ipc/BlockingRpcConnection.html b/devapidocs/src-html/org/apache/hadoop/hbase/ipc/BlockingRpcConnection.html index 008b7d0..942938b 100644 --- a/devapidocs/src-html/org/apache/hadoop/hbase/ipc/BlockingRpcConnection.html +++ b/devapidocs/src-html/org/apache/hadoop/hbase/ipc/BlockingRpcConnection.html @@ -32,557 +32,557 @@ <span class="sourceLineNo">024</span>import static org.apache.hadoop.hbase.ipc.IPCUtil.setCancelled;<a name="line.24"></a> <span class="sourceLineNo">025</span>import static org.apache.hadoop.hbase.ipc.IPCUtil.write;<a name="line.25"></a> <span class="sourceLineNo">026</span><a name="line.26"></a> -<span class="sourceLineNo">027</span>import org.apache.hadoop.hbase.shaded.com.google.protobuf.Message;<a name="line.27"></a> -<span class="sourceLineNo">028</span>import org.apache.hadoop.hbase.shaded.com.google.protobuf.Message.Builder;<a name="line.28"></a> -<span class="sourceLineNo">029</span>import org.apache.hadoop.hbase.shaded.com.google.protobuf.RpcCallback;<a name="line.29"></a> -<span class="sourceLineNo">030</span><a name="line.30"></a> -<span class="sourceLineNo">031</span>import java.io.BufferedInputStream;<a name="line.31"></a> -<span class="sourceLineNo">032</span>import java.io.BufferedOutputStream;<a name="line.32"></a> -<span class="sourceLineNo">033</span>import java.io.DataInputStream;<a name="line.33"></a> -<span class="sourceLineNo">034</span>import java.io.DataOutputStream;<a name="line.34"></a> -<span class="sourceLineNo">035</span>import java.io.IOException;<a name="line.35"></a> -<span class="sourceLineNo">036</span>import java.io.InputStream;<a name="line.36"></a> -<span class="sourceLineNo">037</span>import java.io.InterruptedIOException;<a name="line.37"></a> -<span class="sourceLineNo">038</span>import java.io.OutputStream;<a name="line.38"></a> -<span class="sourceLineNo">039</span>import java.net.Socket;<a name="line.39"></a> -<span class="sourceLineNo">040</span>import java.net.SocketTimeoutException;<a name="line.40"></a> -<span class="sourceLineNo">041</span>import java.net.UnknownHostException;<a name="line.41"></a> -<span class="sourceLineNo">042</span>import java.nio.ByteBuffer;<a name="line.42"></a> -<span class="sourceLineNo">043</span>import java.security.PrivilegedExceptionAction;<a name="line.43"></a> -<span class="sourceLineNo">044</span>import java.util.ArrayDeque;<a name="line.44"></a> -<span class="sourceLineNo">045</span>import java.util.Locale;<a name="line.45"></a> -<span class="sourceLineNo">046</span>import java.util.Queue;<a name="line.46"></a> -<span class="sourceLineNo">047</span>import java.util.concurrent.ConcurrentHashMap;<a name="line.47"></a> -<span class="sourceLineNo">048</span>import java.util.concurrent.ConcurrentMap;<a name="line.48"></a> -<span class="sourceLineNo">049</span>import java.util.concurrent.ThreadLocalRandom;<a name="line.49"></a> -<span class="sourceLineNo">050</span><a name="line.50"></a> -<span class="sourceLineNo">051</span>import javax.security.sasl.SaslException;<a name="line.51"></a> -<span class="sourceLineNo">052</span><a name="line.52"></a> -<span class="sourceLineNo">053</span>import org.apache.commons.logging.Log;<a name="line.53"></a> -<span class="sourceLineNo">054</span>import org.apache.commons.logging.LogFactory;<a name="line.54"></a> -<span class="sourceLineNo">055</span>import org.apache.hadoop.conf.Configuration;<a name="line.55"></a> -<span class="sourceLineNo">056</span>import org.apache.hadoop.hbase.CellScanner;<a name="line.56"></a> -<span class="sourceLineNo">057</span>import org.apache.hadoop.hbase.DoNotRetryIOException;<a name="line.57"></a> -<span class="sourceLineNo">058</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.58"></a> -<span class="sourceLineNo">059</span>import org.apache.hadoop.hbase.exceptions.ConnectionClosingException;<a name="line.59"></a> -<span class="sourceLineNo">060</span>import org.apache.hadoop.hbase.io.ByteArrayOutputStream;<a name="line.60"></a> -<span class="sourceLineNo">061</span>import org.apache.hadoop.hbase.ipc.HBaseRpcController.CancellationCallback;<a name="line.61"></a> -<span class="sourceLineNo">062</span>import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;<a name="line.62"></a> -<span class="sourceLineNo">063</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.RPCProtos;<a name="line.63"></a> -<span class="sourceLineNo">064</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.RPCProtos.CellBlockMeta;<a name="line.64"></a> -<span class="sourceLineNo">065</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.RPCProtos.ConnectionHeader;<a name="line.65"></a> -<span class="sourceLineNo">066</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.RPCProtos.ExceptionResponse;<a name="line.66"></a> -<span class="sourceLineNo">067</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.RPCProtos.RequestHeader;<a name="line.67"></a> -<span class="sourceLineNo">068</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.RPCProtos.ResponseHeader;<a name="line.68"></a> -<span class="sourceLineNo">069</span>import org.apache.hadoop.hbase.security.HBaseSaslRpcClient;<a name="line.69"></a> -<span class="sourceLineNo">070</span>import org.apache.hadoop.hbase.security.SaslUtil;<a name="line.70"></a> -<span class="sourceLineNo">071</span>import org.apache.hadoop.hbase.security.SaslUtil.QualityOfProtection;<a name="line.71"></a> -<span class="sourceLineNo">072</span>import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;<a name="line.72"></a> -<span class="sourceLineNo">073</span>import org.apache.hadoop.hbase.util.ExceptionUtil;<a name="line.73"></a> -<span class="sourceLineNo">074</span>import org.apache.hadoop.io.IOUtils;<a name="line.74"></a> -<span class="sourceLineNo">075</span>import org.apache.hadoop.ipc.RemoteException;<a name="line.75"></a> -<span class="sourceLineNo">076</span>import org.apache.hadoop.net.NetUtils;<a name="line.76"></a> -<span class="sourceLineNo">077</span>import org.apache.hadoop.security.UserGroupInformation;<a name="line.77"></a> -<span class="sourceLineNo">078</span>import org.apache.htrace.Trace;<a name="line.78"></a> -<span class="sourceLineNo">079</span>import org.apache.htrace.TraceScope;<a name="line.79"></a> -<span class="sourceLineNo">080</span><a name="line.80"></a> -<span class="sourceLineNo">081</span>/**<a name="line.81"></a> -<span class="sourceLineNo">082</span> * Thread that reads responses and notifies callers. Each connection owns a socket connected to a<a name="line.82"></a> -<span class="sourceLineNo">083</span> * remote address. Calls are multiplexed through this socket: responses may be delivered out of<a name="line.83"></a> -<span class="sourceLineNo">084</span> * order.<a name="line.84"></a> -<span class="sourceLineNo">085</span> */<a name="line.85"></a> -<span class="sourceLineNo">086</span>@InterfaceAudience.Private<a name="line.86"></a> -<span class="sourceLineNo">087</span>class BlockingRpcConnection extends RpcConnection implements Runnable {<a name="line.87"></a> -<span class="sourceLineNo">088</span><a name="line.88"></a> -<span class="sourceLineNo">089</span> private static final Log LOG = LogFactory.getLog(BlockingRpcConnection.class);<a name="line.89"></a> -<span class="sourceLineNo">090</span><a name="line.90"></a> -<span class="sourceLineNo">091</span> private final BlockingRpcClient rpcClient;<a name="line.91"></a> -<span class="sourceLineNo">092</span><a name="line.92"></a> -<span class="sourceLineNo">093</span> private final String threadName;<a name="line.93"></a> -<span class="sourceLineNo">094</span> @edu.umd.cs.findbugs.annotations.SuppressWarnings(value = "IS2_INCONSISTENT_SYNC",<a name="line.94"></a> -<span class="sourceLineNo">095</span> justification = "We are always under lock actually")<a name="line.95"></a> -<span class="sourceLineNo">096</span> private Thread thread;<a name="line.96"></a> -<span class="sourceLineNo">097</span><a name="line.97"></a> -<span class="sourceLineNo">098</span> // connected socket. protected for writing UT.<a name="line.98"></a> -<span class="sourceLineNo">099</span> protected Socket socket = null;<a name="line.99"></a> -<span class="sourceLineNo">100</span> private DataInputStream in;<a name="line.100"></a> -<span class="sourceLineNo">101</span> private DataOutputStream out;<a name="line.101"></a> -<span class="sourceLineNo">102</span><a name="line.102"></a> -<span class="sourceLineNo">103</span> private HBaseSaslRpcClient saslRpcClient;<a name="line.103"></a> -<span class="sourceLineNo">104</span><a name="line.104"></a> -<span class="sourceLineNo">105</span> // currently active calls<a name="line.105"></a> -<span class="sourceLineNo">106</span> private final ConcurrentMap<Integer, Call> calls = new ConcurrentHashMap<>();<a name="line.106"></a> -<span class="sourceLineNo">107</span><a name="line.107"></a> -<span class="sourceLineNo">108</span> private final CallSender callSender;<a name="line.108"></a> -<span class="sourceLineNo">109</span><a name="line.109"></a> -<span class="sourceLineNo">110</span> private boolean closed = false;<a name="line.110"></a> -<span class="sourceLineNo">111</span><a name="line.111"></a> -<span class="sourceLineNo">112</span> private byte[] connectionHeaderPreamble;<a name="line.112"></a> -<span class="sourceLineNo">113</span><a name="line.113"></a> -<span class="sourceLineNo">114</span> private byte[] connectionHeaderWithLength;<a name="line.114"></a> -<span class="sourceLineNo">115</span><a name="line.115"></a> -<span class="sourceLineNo">116</span> private boolean waitingConnectionHeaderResponse = false;<a name="line.116"></a> -<span class="sourceLineNo">117</span><a name="line.117"></a> -<span class="sourceLineNo">118</span> /**<a name="line.118"></a> -<span class="sourceLineNo">119</span> * If the client wants to interrupt its calls easily (i.e. call Thread#interrupt), it gets into a<a name="line.119"></a> -<span class="sourceLineNo">120</span> * java issue: an interruption during a write closes the socket/channel. A way to avoid this is to<a name="line.120"></a> -<span class="sourceLineNo">121</span> * use a different thread for writing. This way, on interruptions, we either cancel the writes or<a name="line.121"></a> -<span class="sourceLineNo">122</span> * ignore the answer if the write is already done, but we don't stop the write in the middle. This<a name="line.122"></a> -<span class="sourceLineNo">123</span> * adds a thread per region server in the client, so it's kept as an option.<a name="line.123"></a> -<span class="sourceLineNo">124</span> * <p><a name="line.124"></a> -<span class="sourceLineNo">125</span> * The implementation is simple: the client threads adds their call to the queue, and then wait<a name="line.125"></a> -<span class="sourceLineNo">126</span> * for an answer. The CallSender blocks on the queue, and writes the calls one after the other. On<a name="line.126"></a> -<span class="sourceLineNo">127</span> * interruption, the client cancels its call. The CallSender checks that the call has not been<a name="line.127"></a> -<span class="sourceLineNo">128</span> * canceled before writing it.<a name="line.128"></a> -<span class="sourceLineNo">129</span> * </p><a name="line.129"></a> -<span class="sourceLineNo">130</span> * When the connection closes, all the calls not yet sent are dismissed. The client thread is<a name="line.130"></a> -<span class="sourceLineNo">131</span> * notified with an appropriate exception, as if the call was already sent but the answer not yet<a name="line.131"></a> -<span class="sourceLineNo">132</span> * received.<a name="line.132"></a> -<span class="sourceLineNo">133</span> * </p><a name="line.133"></a> -<span class="sourceLineNo">134</span> */<a name="line.134"></a> -<span class="sourceLineNo">135</span> private class CallSender extends Thread {<a name="line.135"></a> -<span class="sourceLineNo">136</span><a name="line.136"></a> -<span class="sourceLineNo">137</span> private final Queue<Call> callsToWrite;<a name="line.137"></a> -<span class="sourceLineNo">138</span><a name="line.138"></a> -<span class="sourceLineNo">139</span> private final int maxQueueSize;<a name="line.139"></a> -<span class="sourceLineNo">140</span><a name="line.140"></a> -<span class="sourceLineNo">141</span> public CallSender(String name, Configuration conf) {<a name="line.141"></a> -<span class="sourceLineNo">142</span> int queueSize = conf.getInt("hbase.ipc.client.write.queueSize", 1000);<a name="line.142"></a> -<span class="sourceLineNo">143</span> callsToWrite = new ArrayDeque<>(queueSize);<a name="line.143"></a> -<span class="sourceLineNo">144</span> this.maxQueueSize = queueSize;<a name="line.144"></a> -<span class="sourceLineNo">145</span> setDaemon(true);<a name="line.145"></a> -<span class="sourceLineNo">146</span> setName(name + " - writer");<a name="line.146"></a> -<span class="sourceLineNo">147</span> }<a name="line.147"></a> -<span class="sourceLineNo">148</span><a name="line.148"></a> -<span class="sourceLineNo">149</span> public void sendCall(final Call call) throws IOException {<a name="line.149"></a> -<span class="sourceLineNo">150</span> if (callsToWrite.size() >= maxQueueSize) {<a name="line.150"></a> -<span class="sourceLineNo">151</span> throw new IOException("Can't add the call " + call.id<a name="line.151"></a> -<span class="sourceLineNo">152</span> + " to the write queue. callsToWrite.size()=" + callsToWrite.size());<a name="line.152"></a> -<span class="sourceLineNo">153</span> }<a name="line.153"></a> -<span class="sourceLineNo">154</span> callsToWrite.offer(call);<a name="line.154"></a> -<span class="sourceLineNo">155</span> BlockingRpcConnection.this.notifyAll();<a name="line.155"></a> -<span class="sourceLineNo">156</span> }<a name="line.156"></a> -<span class="sourceLineNo">157</span><a name="line.157"></a> -<span class="sourceLineNo">158</span> public void remove(Call call) {<a name="line.158"></a> -<span class="sourceLineNo">159</span> callsToWrite.remove(call);<a name="line.159"></a> -<span class="sourceLineNo">160</span> // By removing the call from the expected call list, we make the list smaller, but<a name="line.160"></a> -<span class="sourceLineNo">161</span> // it means as well that we don't know how many calls we cancelled.<a name="line.161"></a> -<span class="sourceLineNo">162</span> calls.remove(call.id);<a name="line.162"></a> -<span class="sourceLineNo">163</span> call.setException(new CallCancelledException("Call id=" + call.id + ", waitTime="<a name="line.163"></a> -<span class="sourceLineNo">164</span> + (EnvironmentEdgeManager.currentTime() - call.getStartTime()) + ", rpcTimeout="<a name="line.164"></a> -<span class="sourceLineNo">165</span> + call.timeout));<a name="line.165"></a> -<span class="sourceLineNo">166</span> }<a name="line.166"></a> -<span class="sourceLineNo">167</span><a name="line.167"></a> -<span class="sourceLineNo">168</span> /**<a name="line.168"></a> -<span class="sourceLineNo">169</span> * Reads the call from the queue, write them on the socket.<a name="line.169"></a> -<span class="sourceLineNo">170</span> */<a name="line.170"></a> -<span class="sourceLineNo">171</span> @Override<a name="line.171"></a> -<span class="sourceLineNo">172</span> public void run() {<a name="line.172"></a> -<span class="sourceLineNo">173</span> synchronized (BlockingRpcConnection.this) {<a name="line.173"></a> -<span class="sourceLineNo">174</span> while (!closed) {<a name="line.174"></a> -<span class="sourceLineNo">175</span> if (callsToWrite.isEmpty()) {<a name="line.175"></a> -<span class="sourceLineNo">176</span> // We should use another monitor object here for better performance since the read<a name="line.176"></a> -<span class="sourceLineNo">177</span> // thread also uses ConnectionImpl.this. But this makes the locking schema more<a name="line.177"></a> -<span class="sourceLineNo">178</span> // complicated, can do it later as an optimization.<a name="line.178"></a> -<span class="sourceLineNo">179</span> try {<a name="line.179"></a> -<span class="sourceLineNo">180</span> BlockingRpcConnection.this.wait();<a name="line.180"></a> -<span class="sourceLineNo">181</span> } catch (InterruptedException e) {<a name="line.181"></a> -<span class="sourceLineNo">182</span> }<a name="line.182"></a> -<span class="sourceLineNo">183</span> // check if we need to quit, so continue the main loop instead of fallback.<a name="line.183"></a> -<span class="sourceLineNo">184</span> continue;<a name="line.184"></a> -<span class="sourceLineNo">185</span> }<a name="line.185"></a> -<span class="sourceLineNo">186</span> Call call = callsToWrite.poll();<a name="line.186"></a> -<span class="sourceLineNo">187</span> if (call.isDone()) {<a name="line.187"></a> -<span class="sourceLineNo">188</span> continue;<a name="line.188"></a> -<span class="sourceLineNo">189</span> }<a name="line.189"></a> -<span class="sourceLineNo">190</span> try {<a name="line.190"></a> -<span class="sourceLineNo">191</span> tracedWriteRequest(call);<a name="line.191"></a> -<span class="sourceLineNo">192</span> } catch (IOException e) {<a name="line.192"></a> -<span class="sourceLineNo">193</span> // exception here means the call has not been added to the pendingCalls yet, so we need<a name="line.193"></a> -<span class="sourceLineNo">194</span> // to fail it by our own.<a name="line.194"></a> -<span class="sourceLineNo">195</span> if (LOG.isDebugEnabled()) {<a name="line.195"></a> -<span class="sourceLineNo">196</span> LOG.debug("call write error for call #" + call.id, e);<a name="line.196"></a> -<span class="sourceLineNo">197</span> }<a name="line.197"></a> -<span class="sourceLineNo">198</span> call.setException(e);<a name="line.198"></a> -<span class="sourceLineNo">199</span> closeConn(e);<a name="line.199"></a> -<span class="sourceLineNo">200</span> }<a name="line.200"></a> -<span class="sourceLineNo">201</span> }<a name="line.201"></a> -<span class="sourceLineNo">202</span> }<a name="line.202"></a> -<span class="sourceLineNo">203</span> }<a name="line.203"></a> -<span class="sourceLineNo">204</span><a name="line.204"></a> -<span class="sourceLineNo">205</span> /**<a name="line.205"></a> -<span class="sourceLineNo">206</span> * Cleans the call not yet sent when we finish.<a name="line.206"></a> -<span class="sourceLineNo">207</span> */<a name="line.207"></a> -<span class="sourceLineNo">208</span> public void cleanup(IOException e) {<a name="line.208"></a> -<span class="sourceLineNo">209</span> IOException ie = new ConnectionClosingException(<a name="line.209"></a> -<span class="sourceLineNo">210</span> "Connection to " + remoteId.address + " is closing.");<a name="line.210"></a> -<span class="sourceLineNo">211</span> for (Call call : callsToWrite) {<a name="line.211"></a> -<span class="sourceLineNo">212</span> call.setException(ie);<a name="line.212"></a> -<span class="sourceLineNo">213</span> }<a name="line.213"></a> -<span class="sourceLineNo">214</span> callsToWrite.clear();<a name="line.214"></a> -<span class="sourceLineNo">215</span> }<a name="line.215"></a> -<span class="sourceLineNo">216</span> }<a name="line.216"></a> -<span class="sourceLineNo">217</span><a name="line.217"></a> -<span class="sourceLineNo">218</span> BlockingRpcConnection(BlockingRpcClient rpcClient, ConnectionId remoteId) throws IOException {<a name="line.218"></a> -<span class="sourceLineNo">219</span> super(rpcClient.conf, AbstractRpcClient.WHEEL_TIMER, remoteId, rpcClient.clusterId,<a name="line.219"></a> -<span class="sourceLineNo">220</span> rpcClient.userProvider.isHBaseSecurityEnabled(), rpcClient.codec, rpcClient.compressor);<a name="line.220"></a> -<span class="sourceLineNo">221</span> this.rpcClient = rpcClient;<a name="line.221"></a> -<span class="sourceLineNo">222</span> if (remoteId.getAddress().isUnresolved()) {<a name="line.222"></a> -<span class="sourceLineNo">223</span> throw new UnknownHostException("unknown host: " + remoteId.getAddress().getHostName());<a name="line.223"></a> -<span class="sourceLineNo">224</span> }<a name="line.224"></a> -<span class="sourceLineNo">225</span><a name="line.225"></a> -<span class="sourceLineNo">226</span> this.connectionHeaderPreamble = getConnectionHeaderPreamble();<a name="line.226"></a> -<span class="sourceLineNo">227</span> ConnectionHeader header = getConnectionHeader();<a name="line.227"></a> -<span class="sourceLineNo">228</span> ByteArrayOutputStream baos = new ByteArrayOutputStream(4 + header.getSerializedSize());<a name="line.228"></a> -<span class="sourceLineNo">229</span> DataOutputStream dos = new DataOutputStream(baos);<a name="line.229"></a> -<span class="sourceLineNo">230</span> dos.writeInt(header.getSerializedSize());<a name="line.230"></a> -<span class="sourceLineNo">231</span> header.writeTo(dos);<a name="line.231"></a> -<span class="sourceLineNo">232</span> assert baos.size() == 4 + header.getSerializedSize();<a name="line.232"></a> -<span class="sourceLineNo">233</span> this.connectionHeaderWithLength = baos.getBuffer();<a name="line.233"></a> -<span class="sourceLineNo">234</span><a name="line.234"></a> -<span class="sourceLineNo">235</span> UserGroupInformation ticket = remoteId.ticket.getUGI();<a name="line.235"></a> -<span class="sourceLineNo">236</span> this.threadName = "IPC Client (" + this.rpcClient.socketFactory.hashCode() + ") connection to "<a name="line.236"></a> -<span class="sourceLineNo">237</span> + remoteId.getAddress().toString()<a name="line.237"></a> -<span class="sourceLineNo">238</span> + ((ticket == null) ? 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Already tried " + curRetries + " time(s).");<a name="line.301"></a> -<span class="sourceLineNo">302</span> }<a name="line.302"></a> -<span class="sourceLineNo">303</span><a name="line.303"></a> -<span class="sourceLineNo">304</span> /*<a name="line.304"></a> -<span class="sourceLineNo">305</span> * wait till someone signals us to start reading RPC response or it is idle too long, it is marked<a name="line.305"></a> -<span class="sourceLineNo">306</span> * as to be closed, or the client is marked as not running.<a name="line.306"></a> -<span class="sourceLineNo">307</span> * @return true if it is time to read a response; false otherwise.<a name="line.307"></a> -<span class="sourceLineNo">308</span> */<a name="line.308"></a> -<span class="sourceLineNo">309</span> private synchronized boolean waitForWork() {<a name="line.309"></a> -<span class="sourceLineNo">310</span> // beware of the concurrent access to the calls list: we can add calls, but as well<a name="line.310"></a> -<span 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Perfect.<a name="line.421"></a> -<span class="sourceLineNo">422</span> return;<a name="line.422"></a> -<span class="sourceLineNo">423</span> }<a name="line.423"></a> -<span class="sourceLineNo">424</span><a name="line.424"></a> -<span class="sourceLineNo">425</span> if (this.rpcClient.failedServers.isFailedServer(remoteId.getAddress())) {<a name="line.425"></a> -<span class="sourceLineNo">426</span> if (LOG.isDebugEnabled()) {<a name="line.426"></a> -<span class="sourceLineNo">427</span> LOG.debug("Not trying to connect to " + remoteId.address<a name="line.427"></a> -<span class="sourceLineNo">428</span> + " this server is in the failed servers list");<a name="line.428"></a> -<span class="sourceLineNo">429</span> }<a name="line.429"></a> -<span class="sourceLineNo">430</span> throw new FailedServerException(<a name="line.430"></a> -<span class="sourceLineNo">431</span> "This server is in the failed servers list: " + remoteId.address);<a name="line.431"></a> -<span class="sourceLineNo">432</span> }<a name="line.432"></a> -<span class="sourceLineNo">433</span><a name="line.433"></a> -<span class="sourceLineNo">434</span> try {<a name="line.434"></a> -<span class="sourceLineNo">435</span> if (LOG.isDebugEnabled()) {<a name="line.435"></a> -<span class="sourceLineNo">436</span> LOG.debug("Connecting to " + remoteId.address);<a name="line.436"></a> -<span class="sourceLineNo">437</span> }<a name="line.437"></a> -<span class="sourceLineNo">438</span><a name="line.438"></a> -<span class="sourceLineNo">439</span> short numRetries = 0;<a name="line.439"></a> -<span class="sourceLineNo">440</span> final short MAX_RETRIES = 5;<a name="line.440"></a> -<span class="sourceLineNo">441</span> while (true) {<a name="line.441"></a> -<span class="sourceLineNo">442</span> setupConnection();<a name="line.442"></a> -<span class="sourceLineNo">443</span> InputStream inStream = NetUtils.getInputStream(socket);<a name="line.443"></a> -<span class="sourceLineNo">444</span> // This creates a socket with a write timeout. 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Let's set up Sasl i/o streams.<a name="line.469"></a> -<span class="sourceLineNo">470</span> inStream = saslRpcClient.getInputStream();<a name="line.470"></a> -<span class="sourceLineNo">471</span> outStream = saslRpcClient.getOutputStream();<a name="line.471"></a> -<span class="sourceLineNo">472</span> } else {<a name="line.472"></a> -<span class="sourceLineNo">473</span> // fall back to simple auth because server told us so.<a name="line.473"></a> -<span class="sourceLineNo">474</span> // do not change authMethod and useSasl here, we should start from secure when<a name="line.474"></a> -<span class="sourceLineNo">475</span> // reconnecting because regionserver may change its sasl config after restart.<a name="line.475"></a> -<span class="sourceLineNo">476</span> }<a name="line.476"></a> -<span class="sourceLineNo">477</span> }<a name="line.477"></a> -<span class="sourceLineNo">478</span> this.in = new DataInputStream(new BufferedInputStream(inStream));<a name="line.478"></a> -<span class="sourceLineNo">479</span> this.out = new DataOutputStream(new BufferedOutputStream(outStream));<a name="line.479"></a> -<span class="sourceLineNo">480</span> // Now write out the connection header<a name="line.480"></a> -<span class="sourceLineNo">481</span> writeConnectionHeader();<a name="line.481"></a> -<span class="sourceLineNo">482</span> // process the response from server for connection header if necessary<a name="line.482"></a> -<span class="sourceLineNo">483</span> processResponseForConnectionHeader();<a name="line.483"></a> -<span class="sourceLineNo">484</span><a name="line.484"></a> -<span class="sourceLineNo">485</span> break;<a name="line.485"></a> -<span class="sourceLineNo">486</span> }<a name="line.486"></a> -<span class="sourceLineNo">487</span> } catch (Throwable t) {<a name="line.487"></a> -<span class="sourceLineNo">488</span> closeSocket();<a name="line.488"></a> -<span class="sourceLineNo">489</span> IOException e = ExceptionUtil.asInterrupt(t);<a name="line.489"></a> -<span class="sourceLineNo">490</span> if (e == null) {<a name="line.490"></a> -<span class="sourceLineNo">491</span> this.rpcClient.failedServers.addToFailedServers(remoteId.address, t);<a name="line.491"></a> -<span class="sourceLineNo">492</span> if (t instanceof LinkageError) {<a name="line.492"></a> -<span class="sourceLineNo">493</span> // probably the hbase hadoop version does not match the running hadoop version<a name="line.493"></a> -<span class="sourceLineNo">494</span> e = new DoNotRetryIOException(t);<a name="line.494"></a> -<span class="sourceLineNo">495</span> } else if (t instanceof IOException) {<a name="line.495"></a> -<span class="sourceLineNo">496</span> e = (IOException) t;<a name="line.496"></a> -<span class="sourceLineNo">497</span> } else {<a name="line.497"></a> -<span class="sourceLineNo">498</span> e = new IOException("Could not set up IO Streams to " + remoteId.address, t);<a name="line.498"></a> -<span class="sourceLineNo">499</span> }<a name="line.499"></a> -<span class="sourceLineNo">500</span> }<a name="line.500"></a> -<span class="sourceLineNo">501</span> throw e;<a name="line.501"></a> -<span class="sourceLineNo">502</span> }<a name="line.502"></a> -<span class="sourceLineNo">503</span><a name="line.503"></a> -<span class="sourceLineNo">504</span> // start the receiver thread after the socket connection has been set up<a name="line.504"></a> -<span class="sourceLineNo">505</span> thread = new Thread(this, threadName);<a name="line.505"></a> -<span class="sourceLineNo">506</span> thread.setDaemon(true);<a name="line.506"></a> -<span class="sourceLineNo">507</span> thread.start();<a name="line.507"></a> -<span class="sourceLineNo">508</span> }<a name="line.508"></a> -<span class="sourceLineNo">509</span><a name="line.509"></a> -<span class="sourceLineNo">510</span> /**<a name="line.510"></a> -<span class="sourceLineNo">511</span> * Write the RPC header: {@code <MAGIC WORD -- 'HBas'> <ONEBYTE_VERSION> <ONEBYTE_AUTH_TYPE>}<a name="line.511"></a> -<span class="sourceLineNo">512</span> */<a name="line.512"></a> -<span class="sourceLineNo">513</span> private void writeConnectionHeaderPreamble(OutputStream out) throws IOException {<a name="line.513"></a> -<span class="sourceLineNo">514</span> out.write(connectionHeaderPreamble);<a name="line.514"></a> -<span class="sourceLineNo">515</span> out.flush();<a name="line.515"></a> -<span class="sourceLineNo">516</span> }<a name="line.516"></a> -<span class="sourceLineNo">517</span><a name="line.517"></a> -<span class="sourceLineNo">518</span> /**<a name="line.518"></a> -<span class="sourceLineNo">519</span> * Write the connection header.<a name="line.519"></a> -<span class="sourceLineNo">520</span> */<a name="line.520"></a> -<span class="sourceLineNo">521</span> private void writeConnectionHeader() throws IOException {<a name="line.521"></a> -<span class="sourceLineNo">522</span> boolean isCryptoAesEnable = false;<a name="line.522"></a> -<span class="sourceLineNo">523</span> // check if Crypto AES is enabled<a name="line.523"></a> -<span class="sourceLineNo">524</span> if (saslRpcClient != null) {<a name="line.524"></a> -<span class="sourceLineNo">525</span> boolean saslEncryptionEnabled = SaslUtil.QualityOfProtection.PRIVACY.<a name="line.525"></a> -<span class="sourceLineNo">526</span> getSaslQop().equalsIgnoreCase(saslRpcClient.getSaslQOP());<a name="line.526"></a> -<span class="sourceLineNo">527</span> isCryptoAesEnable = saslEncryptionEnabled && conf.getBoolean(<a name="line.527"></a> -<span class="sourceLineNo">528</span> CRYPTO_AES_ENABLED_KEY, CRYPTO_AES_ENABLED_DEFAULT);<a name="line.528"></a> -<span class="sourceLineNo">529</span> }<a name="line.529"></a> -<span class="sourceLineNo">530</span><a name="line.530"></a> -<span class="sourceLineNo">531</span> // if Crypto AES is enabled, set transformation and negotiate with server<a name="line.531"></a> -<span class="sourceLineNo">532</span> if (isCryptoAesEnable) {<a name="line.532"></a> -<span class="sourceLineNo">533</span> waitingConnectionHeaderResponse = true;<a name="line.533"></a> -<span class="sourceLineNo">534</span> }<a name="line.534"></a> -<span class="sourceLineNo">535</span> this.out.write(connectionHeaderWithLength);<a name="line.535"></a> -<span class="sourceLineNo">536</span> this.out.flush();<a name="line.536"></a> -<span class="sourceLineNo">537</span> }<a name="line.537"></a> -<span class="sourceLineNo">538</span><a name="line.538"></a> -<span class="sourceLineNo">539</span> private void processResponseForConnectionHeader() throws IOException {<a name="line.539"></a> -<span class="sourceLineNo">540</span> // if no response excepted, return<a name="line.540"></a> -<span class="sourceLineNo">541</span> if (!waitingConnectionHeaderResponse) return;<a name="line.541"></a> -<span class="sourceLineNo">542</span> try {<a name="line.542"></a> -<span class="sourceLineNo">543</span> // read the ConnectionHeaderResponse from server<a name="line.543"></a> -<span class="sourceLineNo">544</span> int len = this.in.readInt();<a name="line.544"></a> -<span class="sourceLineNo">545</span> byte[] buff = new byte[len];<a name="line.545"></a> -<span class="sourceLineNo">546</span> int readSize = this.in.read(buff);<a name="line.546"></a> -<span class="sourceLineNo">547</span> if (LOG.isDebugEnabled()) {<a name="line.547"></a> -<span class="sourceLineNo">548</span> LOG.debug("Length of response for connection header:" + readSize);<a name="line.548"></a> -<span class="sourceLineNo">549</span> }<a name="line.549"></a> -<span class="sourceLineNo">550</span><a name="line.550"></a> -<span class="sourceLineNo">551</span> RPCProtos.ConnectionHeaderResponse connectionHeaderResponse =<a name="line.551"></a> -<span class="sourceLineNo">552</span> RPCProtos.ConnectionHeaderResponse.parseFrom(buff);<a name="line.552"></a> -<span class="sourceLineNo">553</span><a name="line.553"></a> -<span class="sourceLineNo">554</span> // Get the CryptoCipherMeta, update the HBaseSaslRpcClient for Crypto Cipher<a name="line.554"></a> -<span class="sourceLineNo">555</span> if (connectionHeaderResponse.hasCryptoCipherMeta()) {<a name="line.555"></a> -<span class="sourceLineNo">556</span> negotiateCryptoAes(connectionHeaderResponse.getCryptoCipherMeta());<a name="line.556"></a> -<span class="sourceLineNo">557</span> }<a name="line.557"></a> -<span class="sourceLineNo">558</span> waitingConnectionHeaderResponse = false;<a name="line.558"></a> -<span class="sourceLineNo">559</span> } catch (SocketTimeoutException ste) {<a name="line.559"></a> -<span class="sourceLineNo">560</span> LOG.fatal("Can't get the connection header response for rpc timeout, please check if" +<a name="line.560"></a> -<span class="sourceLineNo">561</span> " server has the correct configuration to support the additional function.", ste);<a name="line.561"></a> -<span class="sourceLineNo">562</span> // timeout when waiting the connection header response, ignore the additional function<a name="line.562"></a> -<span class="sourceLineNo">563</span> throw new IOException("Timeout while waiting connection header response", ste);<a name="line.563"></a> -<span class="sourceLineNo">564</span> }<a name="line.564"></a> -<span class="sourceLineNo">565</span> }<a name="line.565"></a> -<span class="sourceLineNo">566</span><a name="line.566"></a> -<span class="sourceLineNo">567</span> private void negotiateCryptoAes(RPCProtos.CryptoCipherMeta cryptoCipherMeta)<a name="line.567"></a> -<span class="sourceLineNo">568</span> throws IOException {<a name="line.568"></a> -<span class="sourceLineNo">569</span> // initilize the Crypto AES with CryptoCipherMeta<a name="line.569"></a> -<span class="sourceLineNo">570</span> saslRpcClient.initCryptoCipher(cryptoCipherMeta, this.rpcClient.conf);<a name="line.570"></a> -<span class="sourceLineNo">571</span> // reset the inputStream/outputStream for Crypto AES encryption<a name="line.571"></a> -<span class="sourceLineNo">572</span> this.in = new DataInputStream(new BufferedInputStream(saslRpcClient.getInputStream()));<a name="line.572"></a> -<span class="sourceLineNo">573</span> this.out = new DataOutputStream(new BufferedOutputStream(saslRpcClient.getOutputStream()));<a name="line.573"></a> -<span class="sourceLineNo">574</span> }<a name="line.574"></a> -<span class="sourceLineNo">575</span><a name="line.575"></a> -<span class="sourceLineNo">576</span> private void tracedWriteRequest(Call call) throws IOException {<a name="line.576"></a> -<span class="sourceLineNo">577</span> try (TraceScope ignored = Trace.startSpan("RpcClientImpl.tracedWriteRequest", call.span)) {<a name="line.577"></a> +<span class="sourceLineNo">027</span>import java.io.BufferedInputStream;<a name="line.27"></a> +<span class="sourceLineNo">028</span>import java.io.BufferedOutputStream;<a name="line.28"></a> +<span class="sourceLineNo">029</span>import java.io.DataInputStream;<a name="line.29"></a> +<span class="sourceLineNo">030</span>import java.io.DataOutputStream;<a name="line.30"></a> +<span class="sourceLineNo">031</span>import java.io.IOException;<a name="line.31"></a> +<span class="sourceLineNo">032</span>import java.io.InputStream;<a name="line.32"></a> +<span class="sourceLineNo">033</span>import java.io.InterruptedIOException;<a name="line.33"></a> +<span class="sourceLineNo">034</span>import java.io.OutputStream;<a name="line.34"></a> +<span class="sourceLineNo">035</span>import java.net.Socket;<a name="line.35"></a> +<span class="sourceLineNo">036</span>import java.net.SocketTimeoutException;<a name="line.36"></a> +<span class="sourceLineNo">037</span>import java.net.UnknownHostException;<a name="line.37"></a> +<span class="sourceLineNo">038</span>import java.nio.ByteBuffer;<a name="line.38"></a> +<span class="sourceLineNo">039</span>import java.security.PrivilegedExceptionAction;<a name="line.39"></a> +<span class="sourceLineNo">040</span>import java.util.ArrayDeque;<a name="line.40"></a> +<span class="sourceLineNo">041</span>import java.util.Locale;<a name="line.41"></a> +<span class="sourceLineNo">042</span>import java.util.Queue;<a name="line.42"></a> +<span class="sourceLineNo">043</span>import java.util.concurrent.ConcurrentHashMap;<a name="line.43"></a> +<span class="sourceLineNo">044</span>import java.util.concurrent.ConcurrentMap;<a name="line.44"></a> +<span class="sourceLineNo">045</span>import java.util.concurrent.ThreadLocalRandom;<a name="line.45"></a> +<span class="sourceLineNo">046</span><a name="line.46"></a> +<span class="sourceLineNo">047</span>import javax.security.sasl.SaslException;<a name="line.47"></a> +<span class="sourceLineNo">048</span><a name="line.48"></a> +<span class="sourceLineNo">049</span>import org.apache.commons.logging.Log;<a name="line.49"></a> +<span class="sourceLineNo">050</span>import org.apache.commons.logging.LogFactory;<a name="line.50"></a> +<span class="sourceLineNo">051</span>import org.apache.hadoop.conf.Configuration;<a name="line.51"></a> +<span class="sourceLineNo">052</span>import org.apache.hadoop.hbase.CellScanner;<a name="line.52"></a> +<span class="sourceLineNo">053</span>import org.apache.hadoop.hbase.DoNotRetryIOException;<a name="line.53"></a> +<span class="sourceLineNo">054</span>import org.apache.hadoop.hbase.exceptions.ConnectionClosingException;<a name="line.54"></a> +<span class="sourceLineNo">055</span>import org.apache.hadoop.hbase.io.ByteArrayOutputStream;<a name="line.55"></a> +<span class="sourceLineNo">056</span>import org.apache.hadoop.hbase.ipc.HBaseRpcController.CancellationCallback;<a name="line.56"></a> +<span class="sourceLineNo">057</span>import org.apache.hadoop.hbase.security.HBaseSaslRpcClient;<a name="line.57"></a> +<span class="sourceLineNo">058</span>import org.apache.hadoop.hbase.security.SaslUtil;<a name="line.58"></a> +<span class="sourceLineNo">059</span>import org.apache.hadoop.hbase.security.SaslUtil.QualityOfProtection;<a name="line.59"></a> +<span class="sourceLineNo">060</span>import org.apache.hadoop.hbase.shaded.com.google.protobuf.Message;<a name="line.60"></a> +<span class="sourceLineNo">061</span>import org.apache.hadoop.hbase.shaded.com.google.protobuf.Message.Builder;<a name="line.61"></a> +<span class="sourceLineNo">062</span>import org.apache.hadoop.hbase.shaded.com.google.protobuf.RpcCallback;<a name="line.62"></a> +<span class="sourceLineNo">063</span>import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;<a name="line.63"></a> +<span class="sourceLineNo">064</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.RPCProtos;<a name="line.64"></a> +<span class="sourceLineNo">065</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.RPCProtos.CellBlockMeta;<a name="line.65"></a> +<span class="sourceLineNo">066</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.RPCProtos.ConnectionHeader;<a name="line.66"></a> +<span class="sourceLineNo">067</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.RPCProtos.ExceptionResponse;<a name="line.67"></a> +<span class="sourceLineNo">068</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.RPCProtos.RequestHeader;<a name="line.68"></a> +<span class="sourceLineNo">069</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.RPCProtos.ResponseHeader;<a name="line.69"></a> +<span class="sourceLineNo">070</span>import org.apache.hadoop.hbase.trace.TraceUtil;<a name="line.70"></a> +<span class="sourceLineNo">071</span>import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;<a name="line.71"></a> +<span class="sourceLineNo">072</span>import org.apache.hadoop.hbase.util.ExceptionUtil;<a name="line.72"></a> +<span class="sourceLineNo">073</span>import org.apache.hadoop.io.IOUtils;<a name="line.73"></a> +<span class="sourceLineNo">074</span>import org.apache.hadoop.ipc.RemoteException;<a name="line.74"></a> +<span class="sourceLineNo">075</span>import org.apache.hadoop.net.NetUtils;<a name="line.75"></a> +<span class="sourceLineNo">076</span>import org.apache.hadoop.security.UserGroupInformation;<a name="line.76"></a> +<span class="sourceLineNo">077</span>import org.apache.htrace.core.TraceScope;<a name="line.77"></a> +<span class="sourceLineNo">078</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.78"></a> +<span class="sourceLineNo">079</span><a name="line.79"></a> +<span class="sourceLineNo">080</span>/**<a name="line.80"></a> +<span class="sourceLineNo">081</span> * Thread that reads responses and notifies callers. Each connection owns a socket connected to a<a name="line.81"></a> +<span class="sourceLineNo">082</span> * remote address. Calls are multiplexed through this socket: responses may be delivered out of<a name="line.82"></a> +<span class="sourceLineNo">083</span> * order.<a name="line.83"></a> +<span class="sourceLineNo">084</span> */<a name="line.84"></a> +<span class="sourceLineNo">085</span>@InterfaceAudience.Private<a name="line.85"></a> +<span class="sourceLineNo">086</span>class BlockingRpcConnection extends RpcConnection implements Runnable {<a name="line.86"></a> +<span class="sourceLineNo">087</span><a name="line.87"></a> +<span class="sourceLineNo">088</span> private static final Log LOG = LogFactory.getLog(BlockingRpcConnection.class);<a name="line.88"></a> +<span class="sourceLineNo">089</span><a name="line.89"></a> +<span class="sourceLineNo">090</span> private final BlockingRpcClient rpcClient;<a name="line.90"></a> +<span class="sourceLineNo">091</span><a name="line.91"></a> +<span class="sourceLineNo">092</span> private final String threadName;<a name="line.92"></a> +<span class="sourceLineNo">093</span> @edu.umd.cs.findbugs.annotations.SuppressWarnings(value = "IS2_INCONSISTENT_SYNC",<a name="line.93"></a> +<span class="sourceLineNo">094</span> justification = "We are always under lock actually")<a name="line.94"></a> +<span class="sourceLineNo">095</span> private Thread thread;<a name="line.95"></a> +<span class="sourceLineNo">096</span><a name="line.96"></a> +<span class="sourceLineNo">097</span> // connected socket. protected for writing UT.<a name="line.97"></a> +<span class="sourceLineNo">098</span> protected Socket socket = null;<a name="line.98"></a> +<span class="sourceLineNo">099</span> private DataInputStream in;<a name="line.99"></a> +<span class="sourceLineNo">100</span> private DataOutputStream out;<a name="line.100"></a> +<span class="sourceLineNo">101</span><a name="line.101"></a> +<span class="sourceLineNo">102</span> private HBaseSaslRpcClient saslRpcClient;<a name="line.102"></a> +<span class="sourceLineNo">103</span><a name="line.103"></a> +<span class="sourceLineNo">104</span> // currently active calls<a name="line.104"></a> +<span class="sourceLineNo">105</span> private final ConcurrentMap<Integer, Call> calls = new ConcurrentHashMap<>();<a name="line.105"></a> +<span class="sourceLineNo">106</span><a name="line.106"></a> +<span class="sourceLineNo">107</span> private final CallSender callSender;<a name="line.107"></a> +<span class="sourceLineNo">108</span><a name="line.108"></a> +<span class="sourceLineNo">109</span> private boolean closed = false;<a name="line.109"></a> +<span class="sourceLineNo">110</span><a name="line.110"></a> +<span class="sourceLineNo">111</span> private byte[] connectionHeaderPreamble;<a name="line.111"></a> +<span class="sourceLineNo">112</span><a name="line.112"></a> +<span class="sourceLineNo">113</span> private byte[] connectionHeaderWithLength;<a name="line.113"></a> +<span class="sourceLineNo">114</span><a name="line.114"></a> +<span class="sourceLineNo">115</span> private boolean waitingConnectionHeaderResponse = false;<a name="line.115"></a> +<span class="sourceLineNo">116</span><a name="line.116"></a> +<span class="sourceLineNo">117</span> /**<a name="line.117"></a> +<span class="sourceLineNo">118</span> * If the client wants to interrupt its calls easily (i.e. call Thread#interrupt), it gets into a<a name="line.118"></a> +<span class="sourceLineNo">119</span> * java issue: an interruption during a write closes the socket/channel. A way to avoid this is to<a name="line.119"></a> +<span class="sourceLineNo">120</span> * use a different thread for writing. This way, on interruptions, we either cancel the writes or<a name="line.120"></a> +<span class="sourceLineNo">121</span> * ignore the answer if the write is already done, but we don't stop the write in the middle. This<a name="line.121"></a> +<span class="sourceLineNo">122</span> * adds a thread per region server in the client, so it's kept as an option.<a name="line.122"></a> +<span class="sourceLineNo">123</span> * <p><a name="line.123"></a> +<span class="sourceLineNo">124</span> * The implementation is simple: the client threads adds their call to the queue, and then wait<a name="line.124"></a> +<span class="sourceLineNo">125</span> * for an answer. The CallSender blocks on the queue, and writes the calls one after the other. On<a name="line.125"></a> +<span class="sourceLineNo">126</span> * interruption, the client cancels its call. The CallSender checks that the call has not been<a name="line.126"></a> +<span class="sourceLineNo">127</span> * canceled before writing it.<a name="line.127"></a> +<span class="sourceLineNo">128</span> * </p><a name="line.128"></a> +<span class="sourceLineNo">129</span> * When the connection closes, all the calls not yet sent are dismissed. The client thread is<a name="line.129"></a> +<span class="sourceLineNo">130</span> * notified with an appropriate exception, as if the call was already sent but the answer not yet<a name="line.130"></a> +<span class="sourceLineNo">131</span> * received.<a name="line.131"></a> +<span class="sourceLineNo">132</span> * </p><a name="line.132"></a> +<span class="sourceLineNo">133</span> */<a name="line.133"></a> +<span class="sourceLineNo">134</span> private class CallSender extends Thread {<a name="line.134"></a> +<span class="sourceLineNo">135</span><a name="line.135"></a> +<span class="sourceLineNo">136</span> private final Queue<Call> callsToWrite;<a name="line.136"></a> +<span class="sourceLineNo">137</span><a name="line.137"></a> +<span class="sourceLineNo">138</span> private final int maxQueueSize;<a name="line.138"></a> +<span class="sourceLineNo">139</span><a name="line.139"></a> +<span class="sourceLineNo">140</span> public CallSender(String name, Configuration conf) {<a name="line.140"></a> +<span class="sourceLineNo">141</span> int queueSize = conf.getInt("hbase.ipc.client.write.queueSize", 1000);<a name="line.141"></a> +<span class="sourceLineNo">142</span> callsToWrite = new ArrayDeque<>(queueSize);<a name="line.142"></a> +<span class="sourceLineNo">143</span> this.maxQueueSize = queueSize;<a name="line.143"></a> +<span class="sourceLineNo">144</span> setDaemon(true);<a name="line.144"></a> +<span class="sourceLineNo">145</span> setName(name + " - writer");<a name="line.145"></a> +<span class="sourceLineNo">146</span> }<a name="line.146"></a> +<span class="sourceLineNo">147</span><a name="line.147"></a> +<span class="sourceLineNo">148</span> public void sendCall(final Call call) throws IOException {<a name="line.148"></a> +<span class="sourceLineNo">149</span> if (callsToWrite.size() >= maxQueueSize) {<a name="line.149"></a> +<span class="sourceLineNo">150</span> throw new IOException("Can't add the call " + call.id<a name="line.150"></a> +<span class="sourceLineNo">151</span> + " to the write queue. callsToWrite.size()=" + callsToWrite.size());<a name="line.151"></a> +<span class="sourceLineNo">152</span> }<a name="line.152"></a> +<span class="sourceLineNo">153</span> callsToWrite.offer(call);<a name="line.153"></a> +<span class="sourceLineNo">154</span> BlockingRpcConnection.this.notifyAll();<a name="line.154"></a> +<span class="sourceLineNo">155</span> }<a name="line.155"></a> +<span class="sourceLineNo">156</span><a name="line.156"></a> +<span class="sourceLineNo">157</span> public void remove(Call call) {<a name="line.157"></a> +<span class="sourceLineNo">158</span> callsToWrite.remove(call);<a name="line.158"></a> +<span class="sourceLineNo">159</span> // By removing the call from the expected call list, we make the list smaller, but<a name="line.159"></a> +<span class="sourceLineNo">160</span> // it means as well that we don't know how many calls we cancelled.<a name="line.160"></a> +<span class="sourceLineNo">161</span> calls.remove(call.id);<a name="line.161"></a> +<span class="sourceLineNo">162</span> call.setException(new CallCancelledException("Call id=" + call.id + ", waitTime="<a name="line.162"></a> +<span class="sourceLineNo">163</span> + (EnvironmentEdgeManager.currentTime() - call.getStartTime()) + ", rpcTimeout="<a name="line.163"></a> +<span class="sourceLineNo">164</span> + call.timeout));<a name="line.164"></a> +<span class="sourceLineNo">165</span> }<a name="line.165"></a> +<span class="sourceLineNo">166</span><a name="line.166"></a> +<span class="sourceLineNo">167</span> /**<a name="line.167"></a> +<span class="sourceLineNo">168</span> * Reads the call from the queue, write them on the socket.<a name="line.168"></a> +<span class="sourceLineNo">169</span> */<a name="line.169"></a> +<span class="sourceLineNo">170</span> @Override<a name="line.170"></a> +<span class="sourceLineNo">171</span> public void run() {<a name="line.171"></a> +<span class="sourceLineNo">172</span> synchronized (BlockingRpcConnection.this) {<a name="line.172"></a> +<span class="sourceLineNo">173</span> while (!closed) {<a name="line.173"></a> +<span class="sourceLineNo">174</span> if (callsToWrite.isEmpty()) {<a name="line.174"></a> +<span class="sourceLineNo">175</span> // We should use another monitor object here for better performance since the read<a name="line.175"></a> +<span class="sourceLineNo">176</span> // thread also uses ConnectionImpl.this. But this makes the locking schema more<a name="line.176"></a> +<span class="sourceLineNo">177</span> // complicated, can do it later as an optimization.<a name="line.177"></a> +<span class="sourceLineNo">178</span> try {<a name="line.178"></a> +<span class="sourceLineNo">179</span> BlockingRpcConnection.this.wait();<a name="line.179"></a> +<span class="sourceLineNo">180</span> } catch (InterruptedException e) {<a name="line.180"></a> +<span class="sourceLineNo">181</span> }<a name="line.181"></a> +<span class="sourceLineNo">182</span> // check if we need to quit, so continue the main loop instead of fallback.<a name="line.182"></a> +<span class="sourceLineNo">183</span> continue;<a name="line.183"></a> +<span class="sourceLineNo">184</span> }<a name="line.184"></a> +<span class="sourceLineNo">185</span> Call call = callsToWrite.poll();<a name="line.185"></a> +<span class="sourceLineNo">186</span> if (call.isDone()) {<a name="line.186"></a> +<span class="sourceLineNo">187</span> continue;<a name="line.187"></a> +<span class="sourceLineNo">188</span> }<a name="line.188"></a> +<span class="sourceLineNo">189</span> try {<a name="line.189"></a> +<span class="sourceLineNo">190</span> tracedWriteRequest(call);<a name="line.190"></a> +<span class="sourceLineNo">191</span> } catch (IOException e) {<a name="line.191"></a> +<span class="sourceLineNo">192</span> // exception here means the call has not been added to the pendingCalls yet, so we need<a name="line.192"></a> +<span class="sourceLineNo">193</span> // to fail it by our own.<a name="line.193"></a> +<span class="sourceLineNo">194</span> if (LOG.isDebugEnabled()) {<a name="line.194"></a> +<span class="sourceLineNo">195</span> LOG.debug("call write error for call #" + call.id, e);<a name="line.195"></a> +<span class="sourceLineNo">196</span> }<a name="line.196"></a> +<span class="sourceLineNo">197</span> call.setException(e);<a name="line.197"></a> +<span class="sourceLineNo">198</span> closeConn(e);<a name="line.198"></a> +<span class="sourceLineNo">199</span> }<a name="line.199"></a> +<span class="sourceLineNo">200</span> }<a name="line.200"></a> +<span class="sourceLineNo">201</span> }<a name="line.201"></a> +<span class="sourceLineNo">202</span> }<a name="line.202"></a> +<span class="sourceLineNo">203</span><a name="line.203"></a> +<span class="sourceLineNo">204</span> /**<a name="line.204"></a> +<span class="sourceLineNo">205</span> * Cleans the call not yet sent when we finish.<a name="line.205"></a> +<span class="sourceLineNo">206</span> */<a name="line.206"></a> +<span class="sourceLineNo">207</span> public void cleanup(IOException e) {<a name="line.207"></a> +<span class="sourceLineNo">208</span> IOException ie = new ConnectionClosingException(<a name="line.208"></a> +<span class="sourceLineNo">209</span> "Connection to " + remoteId.address + " is closing.");<a name="line.209"></a> +<span class="sourceLineNo">210</span> for (Call call : callsToWrite) {<a name="line.210"></a> +<span class="sourceLineNo">211</span> call.setException(ie);<a name="line.211"></a> +<span class="sourceLineNo">212</span> }<a name="line.212"></a> +<span class="sourceLineNo">213</span> callsToWrite.clear();<a name="line.213"></a> +<span class="sourceLineNo">214</span> }<a name="line.214"></a> +<span class="sourceLineNo">215</span> }<a name="line.215"></a> +<span class="sourceLineNo">216</span><a name="line.216"></a> +<span class="sourceLineNo">217</span> BlockingRpcConnection(BlockingRpcClient rpcClient, ConnectionId remoteId) throws IOException {<a name="line.217"></a> +<span class="sourceLineNo">218</span> super(rpcClient.conf, AbstractRpcClient.WHEEL_TIMER, remoteId, rpcClient.clusterId,<a name="line.218"></a> +<span class="sourceLineNo">219</span> rpcClient.userProvider.isHBaseSecurityEnabled(), rpcClient.codec, rpcClient.compressor);<a name="line.219"></a> +<span class="sourceLineNo">220</span> this.rpcClient = rpcClient;<a name="line.220"></a> +<span class="sourceLineNo">221</span> if (remoteId.getAddress().isUnresolved()) {<a name="line.221"></a> +<span class="sourceLineNo">222</span> throw new UnknownHostException("unknown host: " + remoteId.getAddress().getHostName());<a name="line.222"></a> +<span class="sourceLineNo">223</span> }<a name="line.223"></a> +<span class="sourceLineNo">224</span><a name="line.224"></a> +<span class="sourceLineNo">225</span> this.connectionHeaderPreamble = getConnectionHeaderPreamble();<a name="line.225"></a> +<span class="sourceLineNo">226</span> ConnectionHeader header = getConnectionHeader();<a name="line.226"></a> +<span class="sourceLineNo">227</span> ByteArrayOutputStream baos = new ByteArrayOutputStream(4 + header.getSerializedSize());<a name="line.227"></a> +<span class="sourceLineNo">228</span> DataOutputStream dos = new DataOutputStream(baos);<a name="line.228"></a> +<span class="sourceLineNo">229</span> dos.writeInt(header.getSerializedSize());<a name="line.229"></a> +<span class="sourceLineNo">230</span> header.writeTo(dos);<a name="line.230"></a> +<span class="sourceLineNo">231</span> assert baos.size() == 4 + header.getSerializedSize();<a name="line.231"></a> +<span class="sourceLineNo">232</span> this.connectionHeaderWithLength = baos.getBuffer();<a name="line.232"></a> +<span class="sourceLineNo">233</span><a name="line.233"></a> +<span class="sourceLineNo">234</span> UserGroupInformation ticket = remoteId.ticket.getUGI();<a name="line.234"></a> +<span class="sourceLineNo">235</span> this.threadName = "IPC Client (" + this.rpcClient.socketFactory.hashCode() + ") connection to "<a name="line.235"></a> +<span class="sourceLineNo">236</span> + remoteId.getAddress().toString()<a name="line.236"></a> +<span class="sourceLineNo">237</span> + ((ticket == null) ? " from an unknown user" : (" from " + ticket.getUserName()));<a name="line.237"></a> +<span class="sourceLineNo">238</span><a name="line.238"></a> +<span class="sourceLineNo">239</span> if (this.rpcClient.conf.getBoolean(BlockingRpcClient.SPECIFIC_WRITE_THREAD, false)) {<a name="line.239"></a> +<span class="sourceLineNo">240</span> callSender = new CallSender(threadName, this.rpcClient.conf);<a name="line.240"></a> +<span class="sourceLineNo">241</span> callSender.start();<a name="line.241"></a> +<span class="sourceLineNo">242</span> } else {<a name="line.242"></a> +<span class="sourceLineNo">243</span> callSender = null;<a name="line.243"></a> +<span class="sourceLineNo">244</span> }<a name="line.244"></a> +<span class="sourceLineNo">245</span> }<a name="line.245"></a> +<span class="sourceLineNo">246</span><a name="line.246"></a> +<span class="sourceLineNo">247</span> // protected for write UT.<a name="line.247"></a> +<span class="sourceLineNo">248</span> protected void setupConnection() throws IOException {<a name="line.248"></a> +<span class="sourceLineNo">249</span> short ioFailures = 0;<a name="line.249"></a> +<span class="sourceLineNo">250</span> short timeoutFailures = 0;<a name="line.250"></a> +<span class="sourceLineNo">251</span> while (true) {<a name="line.251"></a> +<span class="sourceLineNo">252</span> try {<a name="line.252"></a> +<span class="sourceLineNo">253</span> this.socket = this.rpcClient.socketFactory.createSocket();<a name="line.253"></a> +<span class="sourceLineNo">254</span> this.socket.setTcpNoDelay(this.rpcClient.isTcpNoDelay());<a name="line.254"></a> +<span class="sourceLineNo">255</span> this.socket.setKeepAlive(this.rpcClient.tcpKeepAlive);<a name="line.255"></a> +<span class="sourceLineNo">256</span> if (this.rpcClient.localAddr != null) {<a name="line.256"></a> +<span class="sourceLineNo">257</span> this.socket.bind(this.rpcClient.localAddr);<a name="line.257"></a> +<span class="sourceLineNo">258</span> }<a name="line.258"></a> +<span class="sourceLineNo">259</span> NetUtils.connect(this.socket, remoteId.getAddress(), this.rpcClient.connectTO);<a name="line.259"></a> +<span class="sourceLineNo">260</span> this.socket.setSoTimeout(this.rpcClient.readTO);<a name="line.260"></a> +<span class="sourceLineNo">261</span> return;<a name="line.261"></a> +<span class="sourceLineNo">262</span> } catch (SocketTimeoutException toe) {<a name="line.262"></a> +<span class="sourceLineNo">263</span> /*<a name="line.263"></a> +<span class="sourceLineNo">264</span> * The max number of retries is 45, which amounts to 20s*45 = 15 minutes retries.<a name="line.264"></a> +<span class="sourceLineNo">265</span> */<a name="line.265"></a> +<span class="sourceLineNo">266</span> handleConnectionFailure(timeoutFailures++, this.rpcClient.maxRetries, toe);<a name="line.266"></a> +<span class="sourceLineNo">267</span> } catch (IOException ie) {<a name="line.267"></a> +<span class="sourceLineNo">268</span> handleConnectionFailure(ioFailures++, this.rpcClient.maxRetries, ie);<a name="line.268"></a> +<span class="sourceLineNo">269</span> }<a name="line.269"></a> +<span class="sourceLineNo">270</span> }<a name="line.270"></a> +<span class="sourceLineNo">271</span> }<a name="line.271"></a> +<span class="sourceLineNo">272</span><a name="line.272"></a> +<span class="sourceLineNo">273</span> /**<a name="line.273"></a> +<span class="sourceLineNo">274</span> * Handle connection failures If the current number of retries is equal to the max number of<a name="line.274"></a> +<span class="sourceLineNo">275</span> * retries, stop retrying and throw the exception; Otherwise backoff N seconds and try connecting<a name="line.275"></a> +<span class="sourceLineNo">276</span> * again. This Method is only called from inside setupIOstreams(), which is synchronized. Hence<a name="line.276"></a> +<span class="sourceLineNo">277</span> * the sleep is synchronized; the locks will be retained.<a name="line.277"></a> +<span class="sourceLineNo">278</span> * @param curRetries current number of retries<a name="line.278"></a> +<span class="sourceLineNo">279</span> * @param maxRetries max number of retries allowed<a name="line.279"></a> +<span class="sourceLineNo">280</span> * @param ioe failure reason<a name="line.280"></a> +<span class="sourceLineNo">281</span> * @throws IOException if max number of retries is reached<a name="line.281"></a> +<span class="sourceLineNo">282</span> */<a name="line.282"></a> +<span class="sourceLineNo">283</span> private void handleConnectionFailure(int curRetries, int maxRetries, IOException ioe)<a name="line.283"></a> +<span class="sourceLineNo">284</span> throws IOException {<a name="line.284"></a> +<span class="sourceLineNo">285</span> closeSocket();<a name="line.285"></a> +<span class="sourceLineNo">286</span><a name="line.286"></a> +<span class="sourceLineNo">287</span> // throw the exception if the maximum number of retries is reached<a name="line.287"></a> +<span class="sourceLineNo">288</span> if (curRetries >= maxRetries || ExceptionUtil.isInterrupt(ioe)) {<a name="line.288"></a> +<span class="sourceLineNo">289</span> throw ioe;<a name="line.289"></a> +<span class="sourceLineNo">290</span> }<a name="line.290"></a> +<span class="sourceLineNo">291</span><a name="line.291"></a> +<span class="sourceLineNo">292</span> // otherwise back off and retry<a name="line.292"></a> +<span class="sourceLineNo">293</span> try {<a name="line.293"></a> +<span class="sourceLineNo">294</span> Thread.sleep(this.rpcClient.failureSleep);<a name="line.294"></a> +<span class="sourceLineNo">295</span> } catch (InterruptedException ie) {<a name="line.295"></a> +<span class="sourceLineNo">296</span> ExceptionUtil.rethrowIfInterrupt(ie);<a name="line.296"></a> +<span class="sourceLineNo">297</span> }<a name="line.297"></a> +<span class="sourceLineNo">298</span><a name="line.298"></a> +<span class="sourceLineNo">299</span> LOG.info("Retrying connect to server: " + remoteId.getAddress() + " after sleeping "<a name="line.299"></a> +<span class="sourceLineNo">300</span> + this.rpcClient.failureSleep + "ms. Already tried " + curRetries + " time(s).");<a name="line.300"></a> +<span class="sourceLineNo">301</span> }<a name="line.301"></a> +<span class="sourceLineNo">302</span><a name="line.302"></a> +<span class="sourceLineNo">303</span> /*<a name="line.303"></a> +<span class="sourceLineNo">304</span> * wait till someone signals us to start reading RPC response or it is idle too long, it is marked<a name="line.304"></a> +<span class="sourceLineNo">305</span> * as to be closed, or the client is marked as not running.<a name="line.305"></a> +<span class="sourceLineNo">306</span> * @return true if it is time to read a response; false otherwise.<a name="line.306"></a> +<span class="sourceLineNo">307</span> */<a name="line.307"></a> +<span class="sourceLineNo">308</span> private synchronized boolean waitForWork() {<a name="line.308"></a> +<span class="sourceLineNo">309</span> // beware of the concurrent access to the calls list: we can add calls, but as well<a name="line.309"></a> +<span class="sourceLineNo">310</span> // remove them.<a name="line.310"></a> +<span class="sourceLineNo">311</span> long waitUntil = EnvironmentEdgeManager.currentTime() + this.rpcClient.minIdleTimeBeforeClose;<a name="line.311"></a> +<span class="sourceLineNo">312</span> for (;;) {<a name="line.312"></a> +<span class="sourceLineNo">313</span> if (thread == null) {<a name="line.313"></a> +<span class="sourceLineNo">314</span> return false;<a name="line.314"></a> +<span class="sourceLineNo">315</span> }<a name="line.315"></a> +<span class="sourceLineNo">316</span> if (!calls.isEmpty()) {<a name="line.316"></a> +<span class="sourceLineNo">317</span> return true;<a name="line.317"></a> +<span class="sourceLineNo">318</span> }<a name="line.318"></a> +<span class="sourceLineNo">319</span> if (EnvironmentEdgeManager.currentTime() >= waitUntil) {<a name="line.319"></a> +<span class="sourceLineNo">320</span> closeConn(<a name="line.320"></a> +<span class="sourceLineNo">321</span> new IOException("idle connection closed with " + calls.size() + " pending request(s)"));<a name="line.321"></a> +<span class="sourceLineNo">322</span> return false;<a name="line.322"></a> +<span class="sourceLineNo">323</span> }<a name="line.323"></a> +<span class="sourceLineNo">324</span> try {<a name="line.324"></a> +<span class="sourceLineNo">325</span> wait(Math.min(this.rpcClient.minIdleTimeBeforeClose, 1000));<a name="line.325"></a> +<span class="sourceLineNo">326</span> } catch (InterruptedException e) {<a name="line.326"></a> +<span class="sourceLineNo">327</span> }<a name="line.327"></a> +<span class="sourceLineNo">328</span> }<a name="line.328"></a> +<span class="sourceLineNo">329</span> }<a name="line.329"></a> +<span class="sourceLineNo">330</span><a name="line.330"></a> +<span class="sourceLineNo">331</span> @Override<a name="line.331"></a> +<span class="sourceLineNo">332</span> public void run() {<a name="line.332"></a> +<span class="sourceLineNo">333</span> if (LOG.isTraceEnabled()) {<a name="line.333"></a> +<span class="sourceLineNo">334</span> LOG.trace(threadName + ": starting, connections " + this.rpcClient.connections.size());<a name="line.334"></a> +<span class="sourceLineNo">335</span> }<a name="line.335"></a> +<span class="sourceLineNo">336</span> while (waitForWork()) {<a name="line.336"></a> +<span class="sourceLineNo">337</span> readResponse();<a name="line.337"></a> +<span class="sourceLineNo">338</span> }<a name="line.338"></a> +<span class="sourceLineNo">339</span> if (LOG.isTraceEnabled()) {<a name="line.339"></a> +<span class="sourceLineNo">340</span> LOG.trace(threadName + ": stopped, connections " + this.rpcClient.connections.size());<a name="line.340"></a> +<span class="sourceLineNo">341</span> }<a name="line.341"></a> +<span class="sourceLineNo">342</span> }<a name="line.342"></a> +<span class="sourceLineNo">343</span><a name="line.343"></a> +<span class="sourceLineNo">344</span> private void disposeSasl() {<a name="line.344"></a> +<span class="sourceLineNo">345</span> if (saslRpcClient != null) {<a name="line.345"></a> +<span class="sourceLineNo">346</span> saslRpcClient.dispose();<a name="line.346"></a> +<span class="sourceLineNo">347</span> saslRpcClient = null;<a name="line.347"></a> +<span class="sourceLineNo">348</span> }<a name="line.348"></a> +<span class="sourceLineNo">349</span> }<a name="line.349"></a> +<span class="sourceLineNo">350</span><a name="line.350"></a> +<span c
<TRUNCATED>
